Xvfb¶

Xvfb is an X server that can run on machines with no display hardware and no physical input devices. It emulates a dumb framebuffer using virtual memory.

homepage: https://www.x.org/releases/X11R7.6/doc/man/man1/Xvfb.1.xhtml

Available installations¶

Xvfb version	Supported CPU targets	Supported GPU targets	EESSI version	Module
21.1.14	`generic`: `aarch64`, `x86_64` Arm: `a64fx`, `neoverse_n1`, `neoverse_v1`, `nvidia/grace` AMD: `zen2`, `zen3`, `zen4` Intel: `haswell`, `skylake_avx512`, `sapphirerapids`, `icelake`, `cascadelake`	(none)	2025.06	`Xvfb/21.1.14-GCCcore-13.3.0`
21.1.18	`generic`: `aarch64`, `x86_64` Arm: `a64fx`, `neoverse_n1`, `neoverse_v1`, `nvidia/grace` AMD: `zen2`, `zen3`, `zen4` Intel: `haswell`, `skylake_avx512`, `sapphirerapids`, `icelake`, `cascadelake`	(none)	2025.06	`Xvfb/21.1.18-GCCcore-14.3.0`
21.1.6	`generic`: `aarch64`, `x86_64` Arm: `a64fx`, `neoverse_n1`, `neoverse_v1`, `nvidia/grace` AMD: `zen2`, `zen3`, `zen4` Intel: `haswell`, `skylake_avx512`, `sapphirerapids`, `icelake`, `cascadelake`	(none)	2023.06	`Xvfb/21.1.6-GCCcore-12.2.0`
21.1.8	`generic`: `aarch64`, `x86_64` Arm: `a64fx`, `neoverse_n1`, `neoverse_v1`, `nvidia/grace` AMD: `zen2`, `zen3`, `zen4` Intel: `haswell`, `skylake_avx512`, `sapphirerapids`, `icelake`, `cascadelake`	(none)	2023.06	`Xvfb/21.1.8-GCCcore-12.3.0`
21.1.9	`generic`: `aarch64`, `x86_64` Arm: `a64fx`, `neoverse_n1`, `neoverse_v1`, `nvidia/grace` AMD: `zen2`, `zen3`, `zen4` Intel: `haswell`, `skylake_avx512`, `sapphirerapids`, `icelake`, `cascadelake`	(none)	2023.06	`Xvfb/21.1.9-GCCcore-13.2.0`

Extensions¶

Overview of extensions included in Xvfb installations

bdftopcf¶

`bdftopcf` version	Xvfb modules that include it
1.1	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0` `Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`

font-misc-misc¶

`font-misc-misc` version	Xvfb modules that include it
1.1.2	`Xvfb/21.1.6-GCCcore-12.2.0`
1.1.3	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`

font-util¶

`font-util` version	Xvfb modules that include it
1.3.3	`Xvfb/21.1.6-GCCcore-12.2.0`
1.4.0	`Xvfb/21.1.8-GCCcore-12.3.0`
1.4.1	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`

libxcvt¶

`libxcvt` version	Xvfb modules that include it
0.1.2	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`
0.1.3	`Xvfb/21.1.18-GCCcore-14.3.0`

mkfontdir¶

`mkfontdir` version	Xvfb modules that include it
1.0.7	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0` `Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`

mkfontscale¶

`mkfontscale` version	Xvfb modules that include it
1.2.2	`Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`
1.2.3	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0`

xauth¶

`xauth` version	Xvfb modules that include it
1.1.2	`Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`
1.1.3	`Xvfb/21.1.14-GCCcore-13.3.0`
1.1.4	`Xvfb/21.1.18-GCCcore-14.3.0`

xkbcomp¶

`xkbcomp` version	Xvfb modules that include it
1.4.6	`Xvfb/21.1.6-GCCcore-12.2.0` `Xvfb/21.1.8-GCCcore-12.3.0` `Xvfb/21.1.9-GCCcore-13.2.0`
1.4.7	`Xvfb/21.1.14-GCCcore-13.3.0` `Xvfb/21.1.18-GCCcore-14.3.0`

xkeyboard-config¶

`xkeyboard-config` version	Xvfb modules that include it
2.37	`Xvfb/21.1.6-GCCcore-12.2.0`
2.39	`Xvfb/21.1.8-GCCcore-12.3.0`
2.40	`Xvfb/21.1.9-GCCcore-13.2.0`
2.43	`Xvfb/21.1.14-GCCcore-13.3.0`
2.46	`Xvfb/21.1.18-GCCcore-14.3.0`

Xvfb¶

`Xvfb` version	Xvfb modules that include it
21.1.14	`Xvfb/21.1.14-GCCcore-13.3.0`
21.1.18	`Xvfb/21.1.18-GCCcore-14.3.0`
21.1.6	`Xvfb/21.1.6-GCCcore-12.2.0`
21.1.8	`Xvfb/21.1.8-GCCcore-12.3.0`
21.1.9	`Xvfb/21.1.9-GCCcore-13.2.0`